Re Stern quality issues, 2 x things i noticed on my AC/DC Pro, the 2 x black metal flaps that are on the end of my ramps have gone completely rusty after only 240 home games. The balls are still fine, so its a application process to blue the flaps which never worked properly at all.

I got a baby wipe, and wiped the rust off, and basically 90 percent of the black has come completely off the 2 x metal ramp flaps. Very cheap process used here from factory.  Also, on the X Men Pro, they are now factory silver, no black on them at all, and I now know why.

Also, on the door of the AC/DC Pro, there are a couple of bolts that hold the coin door onto the cabinet, these have gone rusty like the ramp flaps, yet the machine sits inside away from any sea air etc, and on close inspection, the bolts were supposed to have a black coating, but you can see some have been covered very well, and others not well at all.

After a fine tooth comb inspection, there are no other problems on the machines at all, everything else is perfect.